A heart murmur is the sound heard when blood flows roughly, or abnormally across a heart valve. Your healthcare provider can hear the murmur when listening to your heart with a stethoscope. People of all ages can have heart murmurs. Many heart murmurs are harmless, but a murmur might mean you have a problem with your heart.
Date Last Reviewed: 05/01/2020
© 2000-2026 The StayWell Company, LLC. All rights reserved. This information is not intended as a substitute for professional medical care. Always follow your healthcare professional's instructions.
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